Start app shim when app launched.

chrome/browser/web_applications/web_app.h

Index: chrome/browser/web_applications/web_app.h
diff --git a/chrome/browser/web_applications/web_app.h b/chrome/browser/web_applications/web_app.h
index 0ddf31da85b6964b81eeae94f426586ceedc6c4e..a79384dfe92c6c9eae924c402f3ea1dd79afb435 100644
--- a/chrome/browser/web_applications/web_app.h
+++ b/chrome/browser/web_applications/web_app.h
@@ -8,6 +8,7 @@
 #include <string>
 #include <vector>
 
+#include "base/callback.h"
 #include "base/files/file_path.h"
 #include "build/build_config.h"
 #include "chrome/browser/shell_integration.h"
@@ -21,6 +22,8 @@ namespace gfx {
 class ImageFamily;
 }
 
+class Profile;
+
 namespace web_app {
 
 // Gets the user data directory for given web app. The path for the directory is
@@ -105,6 +108,12 @@ std::vector<base::FilePath> GetShortcutPaths(
     const ShellIntegration::ShortcutLocations& creation_locations);
 #endif
 
+#if defined(OS_MACOSX)
+void LaunchShim(Profile* profile,
+                const extensions::Extension* extension,
+                base::Callback<void(bool)> completed);
+#endif
+
 // Implemented for each platform, does the platform specific parts of creating
 // shortcuts. Used internally by CreateShortcutsOnFileThread.
 // |shortcut_data_path| is where to store any resources created for the